Self-propelled truck.



G. M. HOAG.

SELF PROPELLED TRUCK. APPLICATION FILED SEPT.5,1913.

Patented Aug. 4, 1914.

' 4 SHEETS-SHEET 11 INVENTOR G. M= HOAG.

QELF PROPELLED TRUCK.

APPLICATION FILED sEPT.5,191s.

i. ,1 06,217. Pa ented Aug. 4, 1914.

4 SHEETS SHEET Z.

K v M (Jam-M G. M. HOAG.

SELF PROPELLED TRUCK.

APPLICATION FILED SBPT.5,1918.

1 1 06,2 1 7. Patented Au 4, 1914.

4 SHEETS'SHEET 3 lNVlf/VTOR MW #J A WITNESSES G. M. HOAG.

SELF PROPELLED TRUCK.

APPLICATION FILED SEPT.5,1913

Patented Aug. 4 1914.

GEORGE M. HOAG. OF GALV'ESTON, TEXAS SELF-PROPELLED TRUCK Specification of Letters Patent.

Patented A 119:.4, 1 914.

Application filed September 5. 1913. Serial No 788.801

propelled truelo. the ohjet't heing to pro- \t le a trut'lt' in \Ylllt'll the [rat-tor has a tree turning;- iuo etnent independently at the trnt'k fiame.

r\ 'l'tirther ohjeet is to so eonneet the traetor antl l'ltlth hy a universal joint eounet'tiou. that either may fi\t or yield in any tlireetion without transmitting any train tothe other.

A further ohjee! i to provide iinpro etl nit-am for holding the traetor ventrally within the opening in the tlttth plati'orin.

r\ turtlier ohieet ia to SH'Ulllltt'l thrtraetor tllltl tt'llt'li that the l'ornzer may he llll'llttl to any position intlenent'lent ly oi the (rut-l; without an}; torsional strain on the tin of the ttaetor wheels.

A t'urther ohieet is to proyitlt a eon--tra tion wherein tl' hotly ot the tl'll 'h may he low down ttiitl straight t'roni entl to t-Ilti. thus simplifying the eonstruetion aial levelling the (wt of niaont'aetut'tn With these t'nl other ohjeetre in \iew niy inxention eoneiah in the parts ainl eonihinations of parts as will hr more fully explainetl antl pointetl out in the elaims.

In the at-eonipanying drawings l l Ll'tllt 1 i\ a, (it-W in itle elevation ol niy itn n'oyetl trut-lz, Fig.1. 2 is a view in plan ol' same. lrg. ll is an enlargr'e l View in plan of the trar-tor ni niher. it ring. antl the steering: ineehanisni tor the former. Fig. l is a View in nation 01 the latter. Figs. 5 ainl t are views showing the Walk tor eonneeting atnl hraeing the axle ttlltl traelt earr \'in; member of the tractor. Figs. T. 1% amt 9 are iews ot" stew-ring eoninwtions iiet \teen the traitor antl trneh ring! antl l i lm it anti [1 are View, shown;- the manner ot rennet-ting the true marrying ineinher ot th traet r and the true ring.

t represents a tt'itt'h ot' the low (town type the rea entl ot the platform ot whi -h is (an :ie i h) the hent axle ii f the rear Wheel l t -.5; platform is ph'i t'tttttl at its rear ftet the eproeitets in with a tail gate 1 which when lowered. forms a runway tor the loading fllltl unloading tl'ltt'h's. 'lhe sitlw of the hotly 1 of the truek are preterahly tot-melt of channel iron. 5. whieh are rigidly Sttlllt'tl at their front entls to the I'iItJ t'. whieh latter. as shown in Fig. l. is also liltttlt' oi ehaunel iron, The tiiameter oi ring; (1 is approximately equal to the witlth ot' the truvlt platform, and is wholly open for the reeeption ot' the tlflt'ttll] which i ustainetl (-entrally within the ring t3 by the truelt tlll' \'ilt; nteniher T. the entls of whi -h rest within the rhatillel ot' the ring i. Loeatetl ahm e the trut-lt earryinn member T of th trat-tor. is the axle the latter heia; at l'ltlllt angles to the meuiher T, and rigitlly set-uretl thereto hy the holts t :Hltl lt :Hltl hy the hraees 114 The holt's t) tlit l it? ar'e lot-atetl respet-ti ely on opposite it e-- of the axle antl truel; lliitmttitttj iieniher T, tllttl paes through "lit/r t1) loeatetl ttf pet'tiV -ly ahoie ainl below the axle ant! ahoye antl helow the niemher T. the parts heine set-uretl together tHttl sustainett in proper relati e pmitions. hy the nuts tit. seruretl to the tlll'til lttl holta 9 am] 1t) and hearing against the four t-lips l! as hown in Fig. 5. The brave: it are eaeh htt' tl tl at one euil to the axle a ia ent the- (lriuine; sproeltet wheels. and at their other entls to the truck supporting sneniher T atliw vent the (lltlh of the latter. the ehnnp 1 t heitnr einpi y'wl -ai l parts.

l is the traitor frame mounted on brain 1U seeuretl to the :tXle H. 'lhi: frame l?) (L rie the torage hatteriw ttlitl motor whieh latter tlri es the trat'tor wheels 1? through ehains HP aial sproeltets the latter lie 11 ttlt'ttl to the trat'tur whee The truelq rariyine meinher T of the traw tor is of a length equal to the greate t diameter ot' the ring (3. ainl i.\- loeatetl centrally within wi l ring with its e! within the ehannel of the latter :t1ltll3tI'\'-.t n th flanges ot' the ring. lt has an Pita) turning tit within the channel ot the ring ttlltl is protitletl at eaeh entl with a leeve ll whieh latter ha: enlarge l eylimlrit-al outer earls '32 which have an (tint tit hetween the thing es t3 ot' the ehannel ring '3 so as to prevent any flipping o tilting tnoyentetit of the ti ll('i carrying mein' her within the ring t%. The member 7 is ali 0 pro itletl at earh enti with a yoke :LPfl loe elv in untetl thereon anti t'at'l \'il;;j the rollers 13 whi h latter are ltllt't'lllt liztlt. the thingies tor w nner-ting the l l'tittn o "kg hence it V tractor wheels n01: f4 ad by flue employerm g' means ai di-amctricmlly np- 021 Hie Li W frame, the Iatfvr z'zmintained uuutmlly within Honor: :"hm n 119 *1 *rving 4 H 7 5 due horizomai p2; n ti'z amer b phed, at flpposua y L'h' and wififi tin: ring: b. m2. aw; s 1 dis a with the nvcass 21113 at lig f f? 02-: to the I 7, tim

"Luna: pm'img fruw .mspirir and 5100p? sf my invention, hence I would 3:". a a 1:. uniicrqoruzl that I (i0 not confine m self I the dnta'is diaclosed but consider Ayself at liberty to make such departm therefan wlzhin ihe spirif and scope m Milan T. and mounted in bearings car med by the m. is the "ing shaft 24 providwi A? M, A 1m WM; 1:? Emmi pffzifin 2G and 21 its rear emit with in 23mm? 1073 53" The pinm at 1? From: an

"1ft "2%, time? h: w 20v.

end i-i' all? m i win iim vchiule body is 1;, :1 mi HUPI'iDQ mmns e tractor d an; the fins;

whereby il'm trader 1 9 main- 0:, x-nmll'v Within the: ring.

carryn member 7. 31 inturmem e the shaft carrying membes f of the bracket, is the Worm which mewith the rack 31. secured to five upper an of the ta flung: 6 of the channei ring It will therefore be sevn that bv turn ering shaft 28. 4'53 wi'il Fe mm by 0:13.: gen 1: the m H Um tm aithEn thee ring Jmft 24,

"m L U -11; mg member M18. than us a: which. i 0i q: its flu shaft m. mn warm 33 whlch 11:10 U111; end. a 1m cmbrauvd by the ring,

1119mm inmwcdng imi: twister and ring wher by fincfmnt and of the vehicle bodv is 511mm :(i i'he fiaetou. ft carrmi by Hm tracing am :ncshes; with U11: ram: 84" By this constmctiun the carrying n'aember 7 is connected by Worms Wifl he ri. .9" *3 fit diametrically 0p posits pinkso thx at 2.11 times and undi-r 1151 COIldiwUhS, ha Carrying member 7 0f ws 'r shaft; mg" 11 'he 61} Iminramed centralgy Wfihm the mug, and 9.25 in! gram 3? mm-Q my Y--a- Imp 35 file true I: is rigid with the carrv w mew in a havlm: 1

ber,'it u lows fihlxt 211a imam vil} am a: nation of a all times in the center of the frame. By this from mm s12 construc-i' on the tr'acfor may be turned to in the 2'3: -55 any pnsition witlzir, the ring, without Eistion of a vehicle ody having a ring rigidly secured at the front end of said body, a tractor within the ring, the said tractor having 1 truck carrying member located centrally within the ring and loosely connected at its ends with the latter whereby the tractor and its track carryii member may turn horizontally, and stc rig means for turning the tractor.

7. In a self propelled vehicle. the combination of a vehicle body having a ring and a circular rack at its front end, a tractor with in the ring the said tractor having a truck carrying member located centrally with relation to the ring and engaging the latter at diametrically opposite points, and steering mechanism also carried by the tractor and engaging the rack at two points whereby the tractor is maintained centrally Within the ring and has free turning movement in the same.

8. In a self propelled vehicle, the combination with a vehicle body having a ring at its forward end, a rack carried by said ring. a tractor within the ring, the said tractor having a truck carrying member located centrally with relation to the ring and engaging the latter at two oppositely disposed points, and steering gearing located adjacent each end of said truck carrying member and engaging ,the rack on the ring whereby when the steering gearing is actuated the truck carrying member of the tractor ill turn horizontally in the ring.

9. In a self propelled vehicle, the combina tion of a vehicle body having a ring at it forward end, a tractor within the ring. the said tractor having a truck carrying met located centrally with relation to the and engaging the latter at both ends, slccr ing means for irnoving the truck carrying at right angles to said member. the said and member bei g rigidly connected.

1c. in a self propelled vehicle, the combi naiion of a vehicle body having a channeled ring at its forward end. :1 tr: clo within the ring. the said tractor having a truck carrying mcmber centrally loca ed with relation to the ring. and loose alcoves on the ends of said carrying member and resting and mow ing within the channel in the ring.

ll. In a self propelled vehicle, the combination of a vehicle body having a channeled ring at. its forward end, a tractor within the ring, the said tractor having a truck carrying member and an axle at right angles to said member, and sleeves mounted on the ends of said member and resting and moving within the channel of the ring.

12. In a self propelled vehicle, the combination of a vehicle body having a channeled ring at its forward. end, a tractor within the ring, the said tractor having a truck carrying member and an axle at right anglcs to said member, a loose sleeve, and thrust rollers at each end of said member, the said sleeves and rollers resting and moving within the channel of the ring.

13. In a self propelled vehicle, the combination of a body having a ring at its forward end and a tractor having a truck carrying member located at right angles to the axle of the tractor, the said truck carrying member having loose connection, at both of its ends with the ring whereby itv may have a free horizontal turning movement in the ring.

14. In a self propelled vehicle, ti combination of a body having aring at its for- '2 rd end, a tractor having its track carrying member at right angles to its axle, the said truck carrying member having loose connection at both of its ends with said ring whereby" it has a free horizontal turning movement within the ring, and steering means adjacent each end of the truck carry ing member.

ln testimony whereof, I have signed this specification in the presence of two subscribin; Witnesses.

GEORGE M. HOAG. Witnesses GEORGE F. Downnvo, S. G. NOTTINGHAM.

and meshl t1-i' -,l-:1" horizontally within the ring and an 

